Duke Energy Corp. on Monday said another top executive from merger partner Progress Energy, Jeff Lyash, plans to leave the company at the end of the year.

Lyash was Duke's executive vice president of energy supply. A Duke (NYSE: DUK) spokesman said he won't be replaced; his duties will be divided between Keith Trent, a top executive for regulated utilities, and Dhiaa Jamil, the company's chief nuclear officer.

Charlotte-based Duke also said it's bringing in Julie Janson from its Midwestern operations to replace Marc Manly as the company's chief legal officer. Duke agreed to move Manly out of that position as part of a settlement to end the North Carolina Utilities Commission's five-month investigation into the company's decision to push out CEO Bill Johnson just hours after he stepped into the job.

The company also tweaked the responsibilities of several other top execs, as described here.